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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Corona occurs between two transmission wires when they (a) are closely-spaced (b) are widely-spaced (c) have high potential difference (d) carry d.c. power

Power Grid,

2 5711

which type of winding is used for high voltage & low current?

GEB,

1 2519

Can any one give an explanation about rating factors of cable? if we are laying the cable on the air with an temp 15 degree then rating factors will be 1.15 and if we are laying the cable on the air an temp 60 degree then rating factor will be 0.76 please describe it and what is the difference between rating factor and derating factor?

1505

Difference between rating factor of cable and derating factor of cable?

1645

what size steel armoured cable is required to support 1500kva capacity. would 70mm squared be enough or would I need 90 or 120mm squared 3c plus earth

Conan Minerals,

1387

single phase voltage 230 and Three phase voltage 450 why 690 voltage

XYZ,

1 2734

Why PS class CT is always preferred for Differential protection?

1608

Who are the manufactures those manufacturing 3Cx2.5sqmm FRLS cables. I heard about FRLS technology adopted only in wires useful for wirings

2088

For 160kw motor what size of cable and material is needed.?

1 2722

how to calculate IR value of 33KV cable ??

1909

How many battery required for an 3kva online ups with 3 hrs back up with usage of 3 fans,3tube lights

1 2587

list the advantages of RCCB over other circuit breakers?

1711

what will happen if dc is supplied in acb or mccb or other circuit breakers?

1 1979

sir, 3phase induction motor takes different pf and different KW in three phase while running,explain reason

UltraTech,

1482

3ph motor running with unequal kw and different pf what are the reasons

UltraTech,

1882


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

number of I/O devices in siemense plc

2146


What is electrical cable termination

2634


thyristor controlled APFC panel design parameter?

1794


What is meant by full pitched winding?

1187


What is Plank's Law?

1166


can we use NPT glands in LT panel

1849


What are the disadvantages of thermal power plant?

1095


how is the connection of a 3 phase ct trivector meter done on a pole mounted transformer

1371


how to operate and maintenance of 1500 kva diesel generator set

1815


Why is a plain induction motor unsuitable for wide speed control?

2280


what is the maintaining Cf in UPS.

2361


Incoming line 11kv And transformer capacity is 2500kva. Consumption load is 1300A. Then fuse capacity is 11kv line.

1678


Why do we perform an open-circuit test and short-circuit test on the transformer?

1124


how to select automotive wire by mathematical equation with given current, vlotage and resistance

2363


What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

1746